#include <iostream>

using namespace std;

union A
{
	int& _i1;
	int& _i2;
};

int main()
{
	int i1 = 1;
	int i2 = 2;
	A a{ i1 };
	cout << sizeof(a) << endl;
	cout << a._i1 << "," << a._i2 << endl;

	return 0;
}